Bassett, W. (2002). Environmental health procedures (6th.). SPON Press.
Chicago Style aipamenaBassett, W.H. Environmental Health Procedures. 6th. London: SPON Press, 2002.
MLA aipamenaBassett, W.H. Environmental Health Procedures. 6th. SPON Press, 2002.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.